OG详解-OG2 数学2 Q3

Choice A is correct. The line of best fit shown intersects they-axis at a positive    y-value and has a positive slope. The graph of an equation of the form  y = a +bx, where a and b are constants, intersects they-axis atay-value of a  and has a slope of b. Of the given choices, only choice A represents a line that intersects they-axis at a positive y-value, 2.8, and has a positive slope,  1.7.
Choice B is incorrect. This equation represents a line that has a negative slope, not a positive slope. Choice C is incorrect. This equation represents a line that  intersects they-axis at a negative y-value, not a positive y-value. Choice D is
incorrect. This equation represents a line that intersects they-axis at a negative y-value, not a positive y-value, and has a negative slope, not a positive slope.